32 - Introducing APIs in Cisco DNAC and vManage

Question 1

Generally speaking, an __ is code that allows for two different software programs to communicate with each other.

Answer 1

API

Question 2

The different software programs represented in the SDN architecture are comprised of three stacked layers called the __ Plane, __ Plane, and __ Plane.

Answer 2

Data, Control, Application

Question 3

This plane contains network elements (any physical or virtual device that deals with customer traffic)

Answer 3

Data (or forwarding) plane –

Question 4

This plane represents the core layer of the SDN architecture. It contains SDN controllers, which provide centralised control of the devices in the data plane.

Answer 4

Control plane

Question 5

This plane contains SDN applications that communicate their network requirements toward the controller.

Answer 5

Application plane

Question 6

The SDN __ uses APIs to communicate with the application and data plane.

Answer 6

controller

Question 7

___ are used for communication between the controllers and network devices.

Answer 7

Southbound APIs (or device-to-control-plane interfaces)

Question 8

What are 3 common Southbound APIs?

Answer 8

OpenFlow
NETCONF
OpFlex

Question 9

This Southbound API configures the flow tables in switches

Answer 9

OpenFlow

Question 10

This Southbound API configure devices with XML, transactional.

Answer 10

NETCONF

Question 11

This Southbound API provides a distributed control system that is based on a declarative policy information model

Answer 11

OpFlex

Question 12

__are responsible for the communication between the SDN controller and the services that run over the network. __ enable your applications to manage and control the network. So rather than adjusting and tweaking your network repeatedly to get a service or application running correctly, you can set up a framework that allows the application to demand the network setup that it needs.

Answer 12

Northbound APIs

Question 13

Currently there is no __ northbound interface that you can use for communication between the controller and all applications. Instead, you use various different northbound APIs, each working only with a specific set of applications.

Answer 13

single

Question 14

REST APIs use the __ part of an HTTP response to inform clients of their request results.

Answer 14

Status-Line

Question 15

___is based on the HTTP request-response mode.

Answer 15

Representation State Transfer (REST)

Question 16

Cisco DNAC Intent API uses the __, __, __, and __ HTTP actions only.

Answer 16

GET, POST, PUT, and DELETE

Question 17

This HTTP action retrieves data from the path that the URL specifies

Answer 17

GET

Question 18

This HTTP action writes new data at the path the URL specifies

Answer 18

POST

Question 19

This HTTP action replaces existing data at the URL path

Answer 19

PUT

Question 20

This HTTP action removes existing data at the URL path.

Answer 20

DELETE

Question 21

REST uses HTTP or HTTPS to send a request to a web service, which returns a __ code.

Answer 21

response

Question 22

When the web service processes an HTTP or REST request, it returns a standard HTTP __ code that indicates whether the request succeeded

Answer 22

status

Question 23

Although there are many HTTP status codes, the DNAC Intent API uses only a __ of them; the others are intended for use by web services that interact with web browsers.

Answer 23

handful

Question 24

When using automation, like APIs, you must also consider the __ of the communications between the controller and applications or network devices.

Answer 24

security

Question 25

There are two parts of security to REST API communications. First is securing the communication channel from ___. The second is verifying that the data is from a __.

Answer 25

prying eyes, trusted source

Question 26

Cisco DNAC uses the REST API to push TrustSec configuration to ___. For this communication ___ acts as the HTTPS server. Communications between DNAC and __ will be encrypted using SSL.

Answer 26

Cisco ISE

Question 27

The __ API is the Northbound REST API that exposes specific capabilities for the Cisco DNAC platform. The ___ API provides policy-based abstraction of business intent, allow you to focus on an outcome to achieve instead of struggling with the mechanisms that implement that outcome.

Answer 27

Intent

Question 28

The ___API lets you use HTTPS verbs (GET, POST, PUT, DELETE) and JSON syntax to discover and control your network.

Answer 28

RESTful Cisco DNAC Intent

Question 29

__ API – retrieves site hierarchy with network health information

Answer 29

Site Hierarchy Intent

Question 30

__API – retrieves network devices by category, with health information on each of the devices returned

Answer 30

Network Health Intent

Question 31

__ API – retrieves detailed information about devices retrieve by time stamp, mac address, UUID, name, or nwDeviceName.

Answer 31

Network Device Detail Intent

Question 32

__ API – returns overall client health organised as wired and wireless categories.

Answer 32

Client health intent

Question 33

__ API – enables you to retrieve information about available software images, import images into Cisco DNAC, distribute images to network devices, and activate images that have been installed on devices.

Answer 33

Software Image Management (SWIM)

Question 34

__ API – enables you to manage PnP projects, settings, workflows, virtual accounts, and PnP-managed devices

Answer 34

Plug and Play

Question 35

__ API – enables you to retrieve the keywords of all the CLIs that command runner accepts, and it lets you run read-only commands on a network device to retrieve its real-time configuration

Answer 35

Command runner

Question 36

__API – provides programmatic access to the discovery functionality of Cisco DNAC

Answer 36

Network discovery

Question 37

___API – enables you to perform CRUD operations on templates and projects that the template programmer users to facilitate design and provisioning workflows in Cisco DNAC

Answer 37

Template Programmer

Question 38

____ API – simplifies resolution of network performance issues by tracing application paths through the network and providing statistics for each hop along the path

Answer 38

Path Trace

Question 39

___ API – Queries Cisco DNAC for more information about a specific task that your RESTful request initiated

Answer 39

Task

Question 40

___ API – enables you to retrieve files from Cisco DNAC; for example, you might use this API to get a software image or a digital certificate from Cisco DNAC.

Answer 40

File

Question 41

All Cisco DNAC platform REST requests require proof of identity. The ___ API generates a security token that encapsulates the privileges of an authenticated REST caller. Cisco DNAC authorises each required operation according to the access privileges associated with the security token that accompanies the request.

Answer 41

authentication